メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.8562500 34.4500000, 132.8625000 34.4500000, 132.8625000 34.4541667, 132.8562500 34.4541667, 132.8562500 34.4500000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral